Nadia Susanto – Project 07 – Curves

sketch

// Nadia Susanto
// Section B
// nsusanto@andrew.cmu.edu
// Project-07-Curves

var angle = 0;

function setup() {
    createCanvas(480, 480);
    background(220);
    angleMode(radians);
}

function draw() {
    //making the fill to be a combo of random colors
    var r = random(0, 100);
    var g = random(100, 150);
    var b = random(200, 275);
    frameRate(5);
    push();
    fill(r, g, b);
    translate(width/2, height/2); //drawn to be in the middle
    //rotating the asteroid
    angle += 1;
    rotate(angle);
    drawCurve(); //calling function
    pop();

}

function drawCurve() {
    var b = mouseY/2;
    var t = map(mouseY, 0, 200, 40, 120); //constraint

    //creating the astroid
    beginShape();
    for (var i = 0; i < 100; i++) {
      t = map(i, 0, 100, 0, TWO_PI);
      //reference from http://mathworld.wolfram.com/Astroid.html
      var x = 3 * b * cos(t) + b * cos(3 * t);
      var y = 3 * b * sin(t) - b * sin(3 * t);
      vertex(x, y);
    }
    endShape();


}

It was hard figuring out which curve to use as there were so many that were pretty, but I ended up choosing to go with the asteroid curve. I figured that a star-shaped curve could be beautiful especially when rotating. With the rotation it looks like a christmas tree star or it even looks flowerly-like. I also played around with the random colors and constrained it to be only blue/purple shades. I then used mouseX and mouse Y in order to determine the size of the asteroid. Overall, I am pretty happy with the result and it looks beautiful.